PREDICTION OF OXIDATION-LIMITED LIFETIME OF STAINLESS STEEL FOILS FOR PRIMARY SURFACE RECUPERATORS

摘要

Austenitic and ferritic stainless steels are susceptible to breakaway oxidation when exposed to oxidizing gases containing water vapor at elevated temperatures. The normally protective chromium oxide film is disrupted by rapidly-growing mixed oxide nodules. This phenomenon can result in significant damage to the metal substrate, particularly for thin foil sections. A model has been created to predict the onset of failure in air containing water vapor for several austenitic stainless steels, based on testing and analysis of a large number of laboratory specimens.